Ball-bearing for spindles.



PATENTED SEPT. 27, 1904.

0. SELLA. I BALL BEARING FOR SPINDLES.

APPLICATION FILED DECLZQ, 1903.

N0 MODEL I. F M a g v 5 z fl n 4.///%/////////////////////////////v//////% :Wl'TNESSEG UNITED STATESPatented September 27, 1904.

PATENT OFFICE.

CARLO SELLA, OF BIELLA, ITALY. ASSIGNOR OF ONE-HALF TO THE FIRM OFUMBERTO FROVA & (10., OF VERCELLI, ITALY.

BALL-BEARING FOR SPINDLES.

SPECIFICATION forming part of Letters Patent No. 770,986, datedSeptember 27, 1904.

Application filed December 29, 1903. Serial No. 187,052. (No model.)

To all whom it may concern:

Be it known that I, CARLO SELLA, a subject of the King of Italy,residing at Biella, Italy, have invented an Improved Mounting forSpindles in Spinning and Twisting Frames, of which the following is aspecification.

This invention has for its object to provide an improved mounting forthe spindles in spinning and twisting frames, whereby the running of themachines is made more regular and rapid than hitherto, While they can beworked with less driving power, thereby effecting considerable economy.

The arrangement according to this invention can be applied to existingmachines without costly alterations, and the spindles hitherto in usecan be utilized.

In the accompanying drawings, Figure 1 shows in Vertical section a partof a spinning and twisting frame illustrating the application ofthisinvention thereto. Fig. 2 is a perspective view of a detail.

In the machines hitherto in use the spindles have been held at theirupper part in circular bearings on the upper cross-beam M of themachine, while the lower ends of the spindles have been seated infootstep-bearings attached to the lower cross-beam N. As the beamsM andN are not rigidly connected to each other the spindles so mounted have atendency to shift, and this shifting is increased by rapid wear of thesupports. When, therefore, the machine exceeds a certain speed, thespindles vibrate considerably, and this necessitates the machine beingrun at a low speed, from which obviously arises inefliciencies asregards both time and cost.

The improvement according to this invention consists in providing asupport 2, preferably of metal, fixed in any suitable manner to thecross-beams M and N of the machine. This support is provided withbrackets 3 and 4, each carrying for the respective spindle aball-bearing 5 and 6, made preferably of steel and let into recesses inthe brackets 3 and 4:.

One of the spindles proper is shown at 1. They may be like the spindleshitherto in use; but in adapting the present improvements to an existingmachine the spindles hitherto used therewith must be cut at their lowerparts, so that their lower ends are above the cross-beam N, Fig. 1, andthe spindles will be in the same positions as that which they beforeoccupied. The recesses for the cups containing the balls consist ofcollars 7 and 7, provided at one end with rims Sand 8, which are shapedso as to form conical races opposite the interiors of the ball-cups 5and 6, the balls 9 beings placed between the said cups 5 and 6 and theconical rims 8 and 8. The collars 7 and 7 are provided with an axialhole for the spindle 1 to pass through with but little friction. Belowthe conical rims 8 and 8 the collars 7 -and 7 are conically shaped, andeach is provided with a screw-thread. The collars 7 and 7 are also splitalong a part of their length, as shown in Fig. 2. On each of thescrew-threads on the collars 7 and 7 is screwed a nut 10 and 10, whichforces the split parts nearer together and clamps the collars tightlyonto the spindle 1. By this arrangement the height of the spindles canbe easily and rapidly adjusted. Casings 11 11 protect the working partsfrom dust, the lower casing 11 may contain oil, so that the lowerball-bearing is immersed in the oil. This casing is supported by a piece12, pivotally attached to the support 2, which piece 12 can be turnedaside clear of the lower casing when the said casing is to be put inplace or removed; but the casing can be supported in any otherconvenient manner. The upper casing is provided with a hole for thepassage of the spindle 1 and rests on the bracket 4. Between the twobrackets the spindle carries, as usual, a whirl 13 for receiving theband or cord by which rotary motion is imparted to 4 the spindle.

Having now particularly described and ascertained the nature of my saidinvention and in What manner the same is to be performed,

I declare that What I claim is-- In spinning and twisting machines, thecombination of the spindle, a support therefor 5 having projectionstherefrom parts of ballbearing races carried by said projections, splitcollars carried by the spindle, parts of hall-bearing races secured tothe end thereof and means at the other end for clamping them to thespindle, substantially as described. IO

In Witness whereof I have hereunto set my hand in presence of twoWitnesses.

CARLO SELLA. Witnesses:

HUGO PIGGRINI, MARIO CAPUooIo.

